Structure and properties of amorphous CeO2@TiO2 catalyst and its performance in the selective catalytic reduction of NO with NH3

被引：0

作者：

Liu J. ^{[1
,2
]}

Wang L.-L. ^{[1
,2
]}

Fei Z.-Y. ^{[1
,2
]}

Chen X. ^{[1
]}

Tang J.-H. ^{[1
]}

Cui M.-F. ^{[1
]}

Qiao X. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing

[2] College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2016年 / 44卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Amorphous phase; CeO[!sub]2[!/sub]@TiO[!sub]2[!/sub; Denitration NO; Selective catalytic reduction (SCR); SO[!sub]2[!/sub] poisoning; Spontaneous deposition;

D O I：

10.1016/s1872-5813(16)30043-3

中图分类号：

学科分类号：

摘要：

Amorphous CeO2@TiO2 catalyst was prepared by spontaneous deposition method and characterized by XRD, Raman spectra, TEM, N2 physisorption, H2-TPR, NH3-TPD and FT-IR; its performance in the selective catalytic reduction (SCR) of NO with NH3 was investigated. The results show that there is a strong interaction between Ce and Ti which are combined at atomic level. In comparison with the crystal CeO2/TiO2 catalyst prepared by impregnation, the amorphous CeO2@TiO2 catalyst exhibits larger surface area and pore volume, excellent redox ability and acidity, and outstanding catalytic performance in SCR. Over the CeO2@TiO2 catalyst, the conversion of NO reaches 80% at 175℃ and retains 96.0%-99.4% at 200-400℃. Moreover, the amorphous CeO2@TiO2 catalyst also shows strong resistance to H2O and SO2 poisoning. © 2016, Science Press. All right reserved.

引用

页码：954 / 960

页数：6

共 25 条

[21] Zhu B., Fei Z.-Y., Chen X., Tang J.-H., Cui M.-F., Qiao X., Synergetic effect of Cu-Fe composite oxides supported on Al-PILC for SCR of NO with NH3, J Fuel Chem Technol, 42, 9, pp. 1102-1110, (2014)
[22] Gao X., Jiang Y., Zhong Y., Luo Z.Y., Cen K.F., The activity and characterization of CeO2-TiO2 catalysts prepared by the sol-gel method for selective catalytic reduction of NO with NH3, J Hazard Mater, 174, 1-3, pp. 734-739, (2010)
[23] Muhammad, Anil K.P., Heon P.H., Novel sulfation effect on low-temperature activity enhancement of CeO2-added Sb-V2O5/TiO2 catalyst for NH3-SCR, Appl Catal B: Environ, 152, pp. 28-37, (2014)
[24] Deng S.-S., Li Y.-H., Li X.-L., Low-temperature selective catalytic reduction of NO with NH3 over manganese and tin oxides supported on titania, Chem Ind Eng Prog (China), 32, 10, pp. 2403-2408, (2013)
[25] Li J.H., Chen J.J., Ke R., Effects of precursors on the surface Mn species and the activities for NO reduction over MnOx/TiO2 catalysts, Catal Commun, 8, 12, pp. 1896-1900, (2007)

← 1 2 3 →